>> and harris, senator specter served for 30 years in the u.s. senate from 1980 until 2010. first as a democrat and then as a republican and then as a democrat again. right around the time that president obama needed the votes that he could get to pass his health care law and only one of three republicans in congress who voted for president obama's stimulus package and over the three decades in the u.s. senate was involved in 13 supreme court confirmation hearings. before coming to washington, the kansas native worked in philadelphia and part of the warren commission and investigation that a single shot passed through the president and governor conley, and purported the claims that lee harvey oswald acted alone. he was the longest serving senator, who said his former opponent helped save his daughter's life. >> my daughter had been struck with a brain cancer and-- a pretty tough one and children's hospital decided that she was to be placed on a study that was being done. hadn't been approved for common usage, it's chemotherapy using stem cells and she survived. she's 11 year